Aortic intimal sarcoma detected on helical CT.

Aortic intimal sarcomas are rare among the already uncommon primary aortic neoplasms. Due to a low index of suspicion, characteristic radiographic and clinical findings are sometimes misattributed and the diagnosis is not made until autopsy. We describe the helical CT findings of a patient with an advanced aortic intimal sarcoma, intraluminal and extraluminal disease, and extensive metastases.